how do you convert drum brakes to disc brakes

How to Convert Drum Brakes to Disc Brakes

When it comes to enhancing your vehicle’s braking performance, one of the most significant upgrades you can consider is converting from drum brakes to disc brakes. Disc brakes offer better stopping power, improved heat dissipation, and reduced brake fade, making them a preferred choice for both performance vehicles and everyday cars. This article will guide you through the steps involved in this conversion process.

Understanding the Basics

Before diving into the conversion, it’s important to understand the differences between drum and disc brakes. Drum brakes have a cylindrical design that encases the brake shoes, and they function by pushing the shoes against the drum to create friction. On the other hand, disc brakes use a rotor that spins with the wheel, and calipers that clamp brake pads against the rotor, providing more effective braking and heat management.

Assessing Compatibility

The first step in converting drum brakes to disc brakes is to assess the compatibility of your vehicle. Not all vehicles are equipped for a straightforward conversion, so it’s crucial to research whether a disc brake conversion kit is available for your specific make and model. Many classic cars and older models benefit from such kits, while newer cars may already come with disc brakes on the front.

Gathering Necessary Parts

Once you’ve determined compatibility, you’ll need to gather the necessary parts. A typical conversion kit will include

1. Disc brake rotors These are mounted to the wheel hubs. 2. Calipers These house the brake pads and apply pressure to the rotors. 3. Brake pads These create the friction needed to stop the vehicle. 4. Spindles (if necessary) Depending on your vehicle, you may need to replace the spindles. 5. Brake lines You might need to upgrade your brake lines to accommodate the new system.

Be sure to acquire all necessary hardware and tools, including wrenches, brake fluid, and possibly a jack and stands for lifting the vehicle.

1. Lift the Vehicle Use a jack to raise your vehicle and secure it with jack stands. This will provide adequate access to the braking system.

2. Remove the Drum Brakes Start by removing the wheels, then take off the drum brake assemblies. This involves unbolting the drum, disconnecting the brake shoes, and removing any associated hardware.

3. Install the New Components Begin by installing the new spindles (if required), then fit the rotors onto the wheel hubs. Attach the new calipers, ensuring they align correctly with the brake pads and rotors.

4. Connect the Brake Lines Install the new brake lines, ensuring there are no leaks. If your conversion kit includes a master cylinder upgrade, be sure to swap that out as well. This is crucial as disc brakes often require higher pressure to function effectively.

5. Bleed the Brakes After everything is connected, bleed the brake lines to remove any air. This is critical for the performance of your new disc brake system.

6. Reassemble and Test Reassemble the wheels and lower the vehicle. Before taking it for a drive, press the brake pedal a few times to ensure everything is functioning correctly. Check for any leaks or unusual noises.

Final Thoughts

Converting drum brakes to disc brakes can greatly enhance your vehicle’s braking performance, safety, and reliability. Although the process may seem daunting, with the right tools, parts, and careful attention to detail, you can achieve a successful upgrade. Always consult your vehicle's service manual and, if you're unsure about any step in the process, don’t hesitate to seek professional assistance.